<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>左右布局模式</title>
        <style>
            .left{
                width:30%;
                padding:10px;
                background-color: #ffaaff;
                float:left;
            }
            .right{
                width:60%;
                padding:10px;
                background-color:#aaffff;
                float:right;
            }
        </style>
    </head>
    <body>
        <div>
            <div class="left">左侧区域</div>
            <div class="right">右侧区域</div>
        </div>
    </body>
</html>